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PQ HOLDING INC

Overview
  • Total Patents
    108
About

PQ HOLDING INC has a total of 108 patent applications. Its first patent ever was published in 1994. It filed its patents most often in EPO (European Patent Office), WIPO (World Intellectual Property Organization) and Australia. Its main competitors in its focus markets materials and metallurgy, chemical engineering and basic materials chemistry are ECKERT GMBH DR, VELOCYS and MEDALERT INC.

Patent filings per year

Chart showing PQ HOLDING INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hu Yatao 19
#2 Hinchey Richard J 17
#3 Hertzenberg Elliot P 11
#4 Cooper David A 11
#5 Cormier William E 11
#6 Berg Kenneth A 10
#7 Brozzetti Adam J 10
#8 Cormier William Edward 8
#9 Rav Gayatri Sidart 8
#10 Wypart Roman 8

Latest patents

Publication Filing date Title
WO2006022704A1 Zeolite a with submicron-size particles
AU2003295841A8 High surface area zeolites and methods for preparation and use thereof
AU2003231669A1 Process for preparing a modified zeolite
WO03043937A2 Method for controlling synthesis conditions during molecular sieve synthesis using combinations of quaternary ammonium hydroxides and halides
WO02070643A1 Method for minimizing beta glucan problems in beer brewing
TWI241317B Aluminosilicate stabilized halogenated polymers
WO0170629A2 Process for manufacture of zeolites and zeolite mixtures having enhanced cation exchange properties, products produced thereby, and detergent compositions formulated therewith
US6403642B1 Sulfur adsorbent for reducing onion or garlic breath odor
WO0066705A2 Process and composition for reducing chill haze in beverages
AU3726000A Process for preparing a modified zeolite
EP1135343A1 Process and apparatus for making glass beads
US6355596B2 Method for preparing titanium on silica catalysts with controlled distributions
AU5303398A Process for preparing zeolite Y with increased mesopore volume